| abstract |
The present invention provides a porous ceramic catalyst support or filter provided to have a catalyst coating by an oxide wash coating process wherein the washcoat nanoparticles are pre-coated with crosslinked polymer barrier layers to the microcracks and / or microporous surfaces of the ceramic. Blocking the penetration, the barrier coating can be formed by thermally crosslinked hydrocarbon polymers that vaporize at appropriate washcoat stabilization or catalytically active temperatures and selectively block the micropore / microchannel pore volume of the article.n n n n Porous ceramic filter, crosslinking, polymer solution, catalyst coating, washcoat |